Monday, September 19, 2011

I need help with Science! I'm Homeschooled Online, and I don't have books to use!?

1.) Which of the following statements about malleability is not true?

Malleability measures the ability of a substance to be shaped.

Malleability measures how well a substance conducts electricity.

Malleability is most often used in reference to metallic substances.

A malleable substance is not brittle.

2.) What do we mean by conductivity?

The ease with which electricity flows through a substance

The ease with which water flows through a substance

The ease with which you can bend a substance

The ease with which you can burn a substance

3.) Iron hammers can be used to shape gold. Based upon that statement, which of the following is true?

Iron is more malleable than gold.

Gold is more malleable than iron.

They are both equally malleable

Neither iron nor gold are malleable.

4.) Which of the following statements best describes something that is ductile?

It can be drawn out into wires

It is brittle and shatters easily

It will dissolve easily

It is found only in outer space.

5.) What properties would you want a substance that you planned on making into electrical wire to have?

Malleability

Ductility

Conductivity

All of the above

6.) Which of the following is a good conductor of electricity?

Wood

Glass

Copper

Plastic

7.) A substance that is a poor conductor is called

A metal

An insulator

A liquid

An isotope

8.) Which of the following is an example of matter?

anything that takes up space and has mass

electricity

air

both A and C

9.) Matter is a scientific term use to describe most of the world around us. Mass is another scientific term. Which of the following statements about mass is true?

Mass is measured with a balance, not a scale.

Mass is the amount of material a substance is made of.

The amount of mass in a certain volume determines the density of a substance.

All of the above

10.) Weight and mass are often confused. Your weight may change depending on where you are, whereas your mass never changes. Which of the following is true?

Both your mass and weight are measured in pounds

Your mass on the earth is the same as your mass on the moon.

Weight is the measurement of the amount of material a substance is made of.

Mass and weight are always the same.

11.) Is iron rusting a physical or chemical change?

A physical change because the rust looks like the piece of iron.

A chemical change because the rust does not look like the piece of iron.

Neither, no change has taken place when iron rusts.

none of the above

12.) What is inertia?

the hardness of a substance

a specific property of metals

the resistance to change in movement

a test for conductivity

13.) Which of the following are examples of forces at work?

The brakes on a bicycle rubbing against the tire to slow it down.

Gravity holding us down to the surface of the earth.

A woman pushing a baby carriage.

All of the above

14.) When you stretch a rubber band as much as possible, the point just before it breaks is called:

The elastic limit

The flexion maximum

The physical apex

The conductivity

15.) Is odor a physical or chemical property?

odor is a chemical property

odor is a physical property

both of the above

none of the above

16.) What is an exothermic reaction?

a chemical reaction that gives off light

a chemical reaction that gives off moisture

a chemical reaction that releases heat

a physical reaction

17.) Which of the following is not a sign of a chemical reaction?

One or more new chemical substances are formed

Energy is taken in or given out, during the reaction.

The change is usually difficult to reverse.

The substance produced is always conductive.

18.) The fact that matter cannot be created or destroyed and only changes form is called:

Motility

Permanence

Inertia

Magnetism

19.) Intermolecular spaces are

Forces found in outer space

The solid state of matter of any substance

The spaces found between molecules

The speed at which molecules travel through space

20.) Which of the following is a heterogeneous mixture?

Concrete

Salt water

Homogenized milk

TeaI need help with Science! I'm Homeschooled Online, and I don't have books to use!?do your schoolwork! other wise you wont learn anything! and i know what school you go to. thegraceacademy.org right?I need help with Science! I'm Homeschooled Online, and I don't have books to use!?If I had that done I would have helped you but i skipped a couple like that one. If you have questions I could help you with the ones I do have done.

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